package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        password=DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     * @param employeeDto
     */
    public void addEmployee(EmployeeDTO employeeDto) {

        System.out.println("当前线程的id:"+Thread.currentThread().getId());
        Employee employee = new Employee();
        //对象属性拷贝
        BeanUtils.copyProperties(employeeDto, employee);

        //设置账号状态，默认为1
        employee.setStatus(StatusConstant.ENABLE);

        //密码默认为123456
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));


        //employee.setCreateTime(LocalDateTime.now());
       // employee.setUpdateTime(LocalDateTime.now());

        //TODO 后期需要改为当前登录用户的id
       // employee.setCreateUser(BaseContext.getCurrentId());
       // employee.setUpdateUser(BaseContext.getCurrentId());


        employeeMapper.addEmployee(employee);
    }

    /**
     * 员工分页查询
     */
    public PageResult page(EmployeePageQueryDTO employeePageQueryDTO) {
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        Page<Employee> page=employeeMapper.page(employeePageQueryDTO);

        long total=page.getTotal();
        List<Employee> records=page.getResult();
        return new PageResult(total,records);
    }

    /**
     * 启动禁用员工（修改员工）
     */
    public void onoroff(Integer status,long id)
    {
        Employee employee=Employee.builder()
                .status(status)
                .id(id)
                .build();

        employeeMapper.update(employee);
    }


    /**
     * 查询回显
     */
    public Employee getByid(long id)
    {

        Employee employee=employeeMapper.getByid(id);
        employee.setPassword("****");
        return employee;

    }

    /**
     * 编辑员工
     */
    public void update(EmployeeDTO employeeDTO)
    {
        Employee employee=new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);

       // employee.setUpdateTime(LocalDateTime.now());
      //  employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.update(employee);
    }


    /**
     * 修改密码
     */
    public void updatepassword(PasswordEditDTO passwordEditDTO)
    {
        //先md5加密，在进行比对
        String password=DigestUtils.md5DigestAsHex(passwordEditDTO.getOldPassword().getBytes());

        Employee employee=employeeMapper.getByid(BaseContext.getCurrentId());

        if(!password.equals(employee.getPassword())){
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        //employee.setUpdateTime(LocalDateTime.now());
        //employee.setUpdateUser(BaseContext.getCurrentId());
        employee.setPassword(DigestUtils.md5DigestAsHex(passwordEditDTO.getNewPassword().getBytes()));
        employeeMapper.update(employee);



    }
}
